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Troubleshooting

This page lists some common errors and tips for fixing them.

CUDA out of memory

If you see out of memory (OOM) errors, you can try to tune the following parameters.

If OOM happens during prefill, try to decrease --chunked-prefill-size to 4096 or 2048.
If OOM happens during decoding, try to decrease --max-running-requests.
You can also try to decrease --mem-fraction-static, which reduces the memory usage of the KV cache memory pool and helps both prefill and decoding.

CUDA error: an illegal memory access was encountered

This error may be due to kernel errors or out-of-memory issues.

If it is a kernel error, it is not easy to fix. Please file an issue on the GitHub.
If it is out-of-memory, sometimes it will report this error instead of "Out-of-memory." Please refer to the above section to avoid the OOM.